Audio headset



FIG. 1 is a perspective view of a headset as seen from the front, top, and right side;

FIG. 2 is a right side view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines illustrate portions of the audio headset and form no part of the claimed design. 

CLAIM The ornamental design for audio headset, substantially as shown and described. 